Arachnoid cyst presenting with subdural hematoma and intracystic hemorrhage following head injury : a case report

الملخص EN

Intracranial arachnoid cysts are considered to be developmental anomalies with predilection to the temporal fossa.

They are often diagnosed incidentally on imaging during childhood.

Usually they are asymptomatic but can sometimes be symptomatic due to enlargement or hemorrhage.

There are multiple case reports of arachnoid cysts becoming symptomatic with hemorrhagic complications following head trauma.

We report here a 17-year-old patient with temporal fossa arachnoid cysts complicated by a subdural hematoma and intracystic hemorrhage following head injury.

The subdural hematoma was ipsilateral to arachnoid cyst.

Although many arachnoid cysts are asymptomatic and incidentally detected, we should inform patients with arachnoid cysts and their families of the possibility of complications such as subdural or intracystic hematomas and advice them to avoid head injury during daily life activities, regardless of the size and symptoms of the cyst.